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revision 1.123 by jmc, Fri Jan 24 17:55:25 2003 UTC revision 1.367 by edhill, Wed Oct 13 21:49:05 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint55f_post
7    o rename to timeave_init_fixed
8    
9    checkpoint55e_post
10    o some delicate re-shuffle of store directives to avoid one
11      extra call of do_oceanic_physics
12      affects ecco_the_main_loop.F, do_oceanic_physics.F
13      checkpoint_lev1_directives.h
14    o NB: this may break global_ocean adjoint temporarily,
15      but it is clear how to fix it. Will do later, need this now.
16    
17    checkpoint55d_post
18    o ECCO specific cost function terms (up-to-date with 1x1 runs)
19    o ecco_cost_weights is modified to 1x1 runs
20    o modifs to allow observations to be read in as
21      single file or yearly files
22    o enable to read exf forcing fields as either
23      single file or yearly files (flag useExfYearlyFields)
24    checkpoint55d_pre
25    
26    o switch between 2-level and 3-level checkpointing
27    o add ability of MNC to write local and "partial" (eg. 2D slices where
28      the full 3D field is never actually stored) arrays to NetCDF files
29      with the correct (that is, the complete multi-dimensional) set of
30      array indicies
31      - used in mom_vecinv() to write the diagFreq output
32      - tested (demonstrated) in verification/aim.5l_cs
33    o further mnc-ification
34      - add verification/lab_sea to the list with mnc setups
35      - fix undefined mnc v-names in cd_code
36      - add kpp to mnc output (both snapshot and timeave)
37    o non-hydrostatic code
38      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
39        in calc_gw.F
40      - defaults to viscAh
41      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
42        friction or Leith) in non-hydrostatic mode, as long as there is
43        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
44    o pkg/cost
45      extend simple cost functions to treat time mean quantities
46      (T,U,V) via cost_accumulate_state from cost_tile
47    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
48        be 2 times larger than the minimum size the advection scheme requires.
49        now get a perfect conservation of salt in advect_cs test-exp (updated)
50    o GGL90 (Gaspar's TKE mixed layer)
51      - add horizontal diffusion of TKE, requires exchanges in
52        do_fields_blocking_exchanges, horizontal diffusivity is zero by
53        default. In OPA there is no horizontal diffusion of TKE but the
54        mixing coefficients are computed from a horizontal average of TKE of
55        6 points or so. I think that diffusion has a little more physical
56        justification.
57      - clean up ggl90_calc in the hope of reducing memory usage (this hope
58        was in vain)
59      - mask tke-variable in ggl90_init
60    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
61    o fix biharmonic diffusion on CS-grid.
62    o more obcs stuff
63      - added obcs_external_fields_load as an alternative to the EXF-pkg option
64        for reading boundary values. This routine is called from
65        obcs_prescribe_read
66      - updated obcs_check
67      - changed sponge layer relaxation parameter units for days to seconds
68      - turned off sponge layer by default
69      - changed argument list of OBCS_CALC to myTime+deltaTclock
70      - fixed about 35 bugs in obcs_external_fields_load
71    
72    checkpoint55c_post
73    o obcs stuff
74      - new runtime flags useOBCSprescribe, useOBCSbalance
75      - re-arranged obcs_calc
76      - moved exf_getobcs to obcs_prescibe_read
77        obcs_prescibe_read is called after ORLANSKI stuff
78        and independent of it (executable can contain all).
79      - updated obcs_check
80      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
81        These may be necessary only if tangential velocities are
82        prescribed at OB, not sure, needs testing.
83    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
84      which simplifies the calls and passes the ifc check-bounds test
85    
86    checkpoint55b_post
87    o add a 2D scalar, Z location, exchange_2 routine.
88    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
89      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
90      affects advect_cs results (for the wrong reason): update output.txt
91    o use a more standard discretization for biharmonic viscosity ;
92     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
93      affects results of dome set-up: update output.txt
94    o fix gad_advection.F (CubedSphere part), back to version 1.23
95    o fix bug in mom_vi_del2uv.F (CubedSphere part).
96    
97    checkpoint55a_post
98    o merged code to
99      * prescribe/read time-dependent open boundaries
100        (works in conjunction with exf, cal)
101      * sponge layer code for open boundaries
102      * each boundary N/S/E/W now has its own CPP option
103        (healthy for the adjoint)
104    
105    checkpoint55
106    o up-to-date adjoint of previous breaks
107      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
108      - global_ocean_ebm: adjoint still needs fix (TLM ok)
109      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
110      - carbon: * remove tr1-related adjoint verification
111                * add ptracer as control variable
112    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
113      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
114    
115    checkpoint54f_post
116    o in verification/carbin/ remove experiment related to
117      ALLOW_PASSIVE_TRACER (array tr1 etc)
118      code_ad/ input_ad/ results_ad
119    
120    o add two new packages
121      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
122        + subject to optimization (memory)
123      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
124        + subject to reordering (many GOTOs in the original code)
125        + so far opps is called for every (i,j) point, and then operates in
126          the vertical; one may want to reorder the scheme in order operate in
127          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
128          fields)
129    o overhaul of IO so that we now have flags for MDSIO and/or MNC
130      - all verification tests compile and run with linux_ia32_g77
131      - defaults are compatible with current input files--nothing
132        should change if you were not previously using MNC
133      - MNC output has been added in numerous places (eg. timeave)
134        but there are still a few writes not yet do-able with MNC
135        (this is in progress)
136      - flags now allow for either/or/both use of MDSIO and MNC and
137        documentation will soon follow
138      - numerous small formatting cleanups for ProTeX
139    o add version info (via BUILD_INFO.h) to MNC and stdout
140    
141    checkpoint54e_post
142    o add two new packages
143      - pp81 (Packanowski and Philander, 1981), Richardson number and
144        stratification dependent mixing
145      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
146      - these scheme operate in a similar manner as KPP (without ghat, of
147        course), however there is only one diffusivity that is used for both
148        temperature and salinity (and passive tracers)ç
149    o add offline package
150    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
151      provided by Stephanie Dutkiewicz
152    o genmake2: add ability to search for C compilers and cleanup test output
153      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
154    
155    checkpoint54d_post
156    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
157    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
158      leading to additional shift by 5 days each year of integration
159       (i.e. leading to considerable offset over the years)
160    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
161    o start with no AB and no initial filtering (staggerTimeStep):
162      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
163    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
164      (external loading & cpl import/export stay in forward_step.F)
165    o update coupling interface to work with new staggerTimeStep
166    o change MDSIO ptracers_pickup.
167    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
168    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
169    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
170    
171    checkpoint54c_post
172    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
173      this affects (truncation error) output.txt of test-exp:
174       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
175    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
176    o change Qnet to always be the net heat flux, (+upward).
177      affects (truncation error) output of natl_box exp.: updated
178    o define the max number of passive tracers in PTRACERS_SIZE.h
179    o start to test mnc routinely in exp0
180    o add sea-ice loading (sIceLoad) as a new forcing field.
181    
182    checkpoint54b_post
183    o add testreport "-j JOBS" option for parallel builds (tested and pretty
184       impressive on Altix and Opteron systems)
185    o diagnostics can now write NetCDF files through the mnc package
186    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
187    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
188    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
189      affects (truncation error) output of lab_sea & natl_box exp.: updated
190    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
191    
192    checkpoint54a_post
193    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
194    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
195    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
196    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
197      + internal_wave (shift in writing cg2d_ini_res)
198    checkpoint54a_pre
199    
200    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
201      - modified verification/lab_sea and natl_box_adjoint accordingly
202    
203    checkpoint54
204    checkpoint53g_post
205    o prepare splitting of thermodynamics: store convect.counter in common block
206    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
207      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
208    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
209    o new parameter "nShapS": allow to treat differently S from T (nShapT)
210    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
211    o restore adjointability
212    
213    checkpoint53f_post
214    o modifications that affect AIM experiment results (update output.txt):
215      - no advection of S at top interface Nr (pkg/generic_advdiff)
216      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
217    o AIM pkg:
218      - include stability function into surf.Flux derivative relative to Tsurf
219      - calculate clear-sky radiation & surface temp. change (for diagnostics)
220    
221    checkpoint53e_post
222    o merged cylindrical coord configuration
223    o added rotating_tank experiment
224    checkpoint53e_pre
225    
226    checkpoint53d_post
227    o faulks upgraded: re-generate output.txt that have changed:
228       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
229    o Added Bryan and Lewis, 1979, vertical diffusivity profile
230    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
231    o added Sadourny discretization of Coriolis
232      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
233      - re-enabled use of omega3 (useAbsVorticity)
234    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
235      vector-invariant equations
236      - note: does *NOT* yet use same variable visc. for no-slip BC's.
237    o recoded the lateral boundary conditions for non-hydrostatic w, this time
238      hopefully without new bugs
239      - still to do: biharmonic friction for non-hydrostatic w
240    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
241    o regenerated output for global_ocean_ebm (using -ieee)
242    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
243      of mom_common/
244      - simple re-arrangement of instructions within computing loop
245    checkpoint53d_pre
246    
247    checkpoint53c_post
248    o new version of coupler for AIM+thSIce and Ocean models
249     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
250     - land: change Evaporation of snow
251     - aim with thSIce: fix bug in snow-precip.
252    o changes to calc_gw.F
253     - bug fix for w^2 term near the bottom boundary
254     - (hopefully) improve the lateral slip boundary condtions for use with
255        partial/looped cells
256      - because the bug fix changes two verification experiments anyway (exp5
257        and plume on slope), change the lateral boundary condition from half slip
258        to the value of no_slip_sides
259    o ebm package wasnt quite up to the parallel task. Fixed that.
260    o Adjoint of EBM package + verification
261      * TLM OK
262      * ADM not sufficient accuracy yet (needs further testing)
263    
264    checkpoint53b_post
265    o Commiting new energy balance model to repository
266      * package is pkg/ebm
267      * verif. is verification/global_ocean_ebm
268      * references are in ebm_driver.F
269    C      * X. Wang, P. Stone and J. Marotzke, 1999:
270    C        Global thermohaline circulation. Part I:
271    C        Sensitivity to atmospheric moisture transport.
272    C        J. Climate 12(1), 71-82
273    C      * X. Wang, P. Stone and J. Marotzke, 1999:
274    C        Global thermohaline circulation. Part II:
275    C        Sensitivity with interactive transport.
276    C        J. Climate 12(1), 83-91
277    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
278    C        Destabilization of the thermohaline circulation
279    C        by atmospheric eddy transports.
280    C        J. Climate 7(12), 1870-1882
281    o Will need long integration testing.
282    checkpoint53b_pre
283    
284    o created pkg/mom_common in preparation for variable viscosity code
285    o renamed and split ini_mnc_io
286    o pkg/land: only liquid water can diffuse or run-off
287    o AIM using land: soil wetness availability account for snow
288    o added printMapIncludesZeros to EEPARMS namelist
289    
290    checkpoint53a_post
291    o restore TAMC compatiility for exf_constants.h
292      (no usage of _d in .h)
293    o Additional storing in KPP in an attempt to fix
294      TAMC problem with adjoint of KPP code.
295      (no success...)
296      Identical code works fine with TAF.
297    o Fixed verification/natl_box_adjoint experiments.
298      Initial conditions for Experiments 4 and 5 are now
299      set to "SEAICE_initialHEFF=0", which is more reasonable,
300      and hence gives results closer to that of Experiment 2.
301      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
302    
303    checkpoint53
304    o stable checkpoint with up to date adjoint
305      TLM tests only run for 1st grdchk at the moment. Its unclear if
306      this is a code problem or a problem with resetting code for g_
307      variables that is being autogenerated wrong.
308      Otherwise:
309       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
310       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
311         are both still in chaos following their security messes.
312    
313    checkpoint52n_post
314    o various build (mostly genmake2) changes including:
315      - ability to build/run more easily within Cygwin and MacOS X
316      - more complicated Makefiles with a stronger dependence on Gnu Make
317    o pkg/seaice modifications
318      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
319        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
320        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
321      - changed proxy for geostrophic velocity and updated
322        verification/lab_sea/results/* accordingly
323      - removed ADI dynamic solver from pkg/seaice
324      - replaced all occurrences of 1/CSTICE or 1/CSUICE
325        they caused a segmentation fault under certain circumstances
326      - removed unused field WATR
327    o bug fix in exf-package:
328      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
329         now reflect that.
330    o small fixes in the cal-package:
331      - set reference date to first of January for the 'model'-calendar
332      - failing of cal_CheckDate in cal_FullDate now actually results in a
333        warning
334    o small modifications in exf-package to increase flexibility:
335      - change climtempfreeze from a constant to a runtime parameter that
336        is specified in data.exf_clim (default = -1.9)
337      - introduce runtime parameter windstressmax (default = 2.0) that is
338        specified in data.exf
339    o fix in pkg/thsice:
340      - update Evap (Tsf changes) to be consistent with Latent heat flux
341      - maintain snow precipitation unchanged (even if Tsf >=0).
342     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
343    
344    checkpoint52m_post
345    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
346      this does not change any of the results, because myIter=0 in swfrac always
347      lead to jwtype=2 (the default anyway), but the call makes little sense
348      as a default
349    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
350    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
351      atmospheric model (AIM) to use it ; add a "slab ocean" component.
352    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
353    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
354    o extending useSingleCpuIO option to work with new exch2 I/O format
355      - old-style, missing-tile I/O is still accessible by defining CPP
356        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
357    o monitor package can write to NetCDF files and/or STDOUT
358    o fix re-definition bug in MNC_GRID_INIT_ALL()
359    o doc/api_reference added
360      - a framework for building an API Reference Manual using all
361        the "protex" comments embedded in the code
362      - see pkg/generic_advdiff, pkg/mnc for examples
363    o MNC:
364      - make myThid the last argument for all subroutines
365      - new default for the grid files: NO halos
366      - add useMNC and other run-time flags
367      - separate per-file-group handling of the unlimited dimension
368      - early initialization of MNC w/ flags read at the eeboot stage
369        and lookup tables set in initialize_fixed
370      - write all MNC output to a freshly-created directory
371    o thermodynamics sea-ice (thsice) is now tested with testreport.
372    o test exp. advect_cs: use the standard cs32 grid ; update output.
373    o Added functionality to grdchk:
374      pick global i,j,k position (or nearest wet) where to perform check.
375    
376    checkpoint52l_post
377    o new land formulation:
378      a) use ground enthalpy as prognostic variable to ensure exact
379         energy conservation.
380      b) account for water temperature and for latent heat of freezing
381         in all processes (rain, run-off, ground storage)
382      c) compute surface and ground temperature implicitly.
383    o aim_v23 modification for new land model:
384      a) Treat separately land / ocean / sea-ice surface fluxes
385         to allow implicit computation of land & sea-ice surface temp.
386      b) add snow precipitation.
387    checkpoint52l_pre
388    
389    o fix problem (when 1 tile is empty) in min/max monitor.
390    o fix bug in timeAve (u,vZetatave in common block)
391    o no restoring terms under ice for pkg/seaice
392    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
393    o bug fix for pkg/seaice pickups
394    o change MNC call locations and add coordinate attributes
395    o mask vorticity at the corner ; affects global_ocean.cs output
396    o fix ini_curvilinear_grid ; test CS experiments with mpi
397    o aim.5l_cs: modify sea-ice fraction input file ; update output
398    o exf: Adding simple range check routine for exf fields after read
399    
400    checkpoint52k_post
401    o removed top-level directory "diags"
402      - we migrated these functions to pkg/timeave a long time ago
403    o fixed bug introduced in pkg/monitor
404    o accuracy ctrlprec = 32 insuffient for gradient checks using
405      averaged fields (I/O via cost_averages)
406      -> use ctrl.h in active_file*.F to control I/O precision.
407    o paramter list of CALL ADTHE_MAIN_LOOP
408    o added initial do_the_model_io to ecco
409    o set all ...Freq to zero after cost_final
410      taveFreq, dumpFreq, pChkptFreq
411    o MAIN and ECCO differentiability restored
412    
413    checkpoint52j_post
414    o fix nchklev in tamc.h for global_ocean...
415    o Bringing flow and store directives up-to-date
416    o Really weird thing!
417      call do_the_model_io from the_main_loop with parameters
418      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
419      TAF places a faulty re-call of initialise_varia
420      after cost_final call which should not be there!
421    checkpoint52j_pre
422    
423    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
424      error messages
425    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
426    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
427      debug output
428    o modfied mdsio_writefield.F to handle non-global files under exch2
429    o update AIM Cubed-Sphere exp (aim.5l_cs):
430      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
431    o update AIM Equatorial Channel exp:
432      use standard aim_v23 pkg and change the SST fields to be more realistic.
433    o globalFile now works with exch2
434    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
435      mon_vort3.F to make exch2 friendly with >1 tile per cube face
436    o limit timeave output for hi-res integrations
437    
438    checkpoint52i_post
439    o removed CPP_EEOPTIONS.h from verification/*/code
440    o updated the tiling for global_ocean_pressure
441    checkpoint52i_pre
442    
443    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
444      the old pkg/aim).
445    
446    checkpoint52h_pre
447    o shortened offending lines in exch2_send_rx?.template
448    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
449    o genmake2: add build & execute test for NetCDF code
450    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
451      old grid files, moved CPP_EEMACROS.h to pkg/exch2
452    o added useSingleCPUIO flag to monitor.F and mon_out.F
453    o added temporary hack for sea-ice dynamics on the cube:
454      metric terms are ignored and it is assumed that
455      there is no sea-ice on cube faces 1, 2, 4, and 5.
456    
457    checkpoint52f_post
458    o added exch2 cube routines to pkg/exch2
459    o modified hs94.cs-32x32x5 to use it
460    o added new grid files to hs94.cs-32x32x5
461    checkpoint52f_pre
462    
463    checkpoint52e_post
464    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
465      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
466    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
467      to work with implicit vertical advection and AB ;
468    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
469    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
470     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
471    checkpoint52e_pre
472    
473    o fix bug in impldiff when Nr=1 or Nr=2.
474    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
475    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
476    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
477      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
478    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
479    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
480    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
481    
482    checkpoint52d_post
483    o re-tiled many expts to allow comparison in multi-processor mode
484      - updated output accordingly
485      - changed hs94.128x64x5 to use intial T from file rather than use the
486        random number generator
487    o add infrastructure in model routines for fizhi and gridalt packages
488    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
489    o changes to permit hi-res, cubed-sphere, configuration
490      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
491      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
492      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
493        of surface winds for the cube
494      (A verification experiment, based on global_ocean.cs32x15, but with
495       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
496       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
497       complete with example surface forcing files and matlab scripts to look
498       at the output and compare it with that of global_ocean.cs32x15.)
499    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
500       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
501       to conform to the common rule.
502    o check-in the first version of the coupler + interfaces for multi-components
503       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
504       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
505       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
506       - ocean and atmos. share the same horizontal grid (no interpolation).
507       - exchanges between component and coupler is done in forward_step
508    o new verification experiment, cpl_aim+ocn:
509       coupled ocean - AIM atmosphere on cs32 grid.
510    
511    checkpoint52d_pre
512    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
513    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
514    
515    checkpoint52c_post
516    o Fixing OPTIONS files for use of exf:
517      - ALLOW_ECCO not needed
518      - ECCO_CPPOPTIONS.h should not be included from
519        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
520        as has been the case in the past
521      - All cal/exf related options are currently set in
522        single header file. Should remain so until we
523        agree on a consistent new policy.
524    o Removed all CPP options for cal package.
525      cal has no more CPP options.
526    o modified STOREs in GAD_ADVECTION
527    o corrected key comp. for passkey
528    
529    checkpoint52b_post
530    o new version: "thsice" of thermodynamic sea-ice pkg:
531     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
532     - modify fluxes but do not change theta directly;
533     - light cleaning of bulk_force pkg (still needed with thsice).
534     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
535       + output_thsice.txt to test thsice & bulk_force pkgs.
536    o put back grid & coriolis monitor output.
537    checkpoint52b_pre
538    
539    o call "do_the_model_io" at the beginning (=> dump initial state)
540    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
541    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
542      (need info on NUMBER_OF_PTRACERS)
543    o missing PTRACERS headers in some routines
544    o default tamc.h in pkg/autodiff supposed to crash
545      to ensure proper customization
546    
547    checkpoint52a_post
548    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
549      - moved surfaceTendencyTice from pkg/seaice to main code
550      - subroutine FREEZE_SURFACE now limits only surface temperature
551        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
552        => new output.txt for global_ocean.cs32x15 & global_with_exf
553      - keep the old version of FREEZE for backward compatibility;
554        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
555      - corresponding modifs for TAF directives
556    o added surface flux output variables to TIMEAVE_STATVARS
557    o time-averaged output for pkg/ptracers
558    o fix problem with ECCO-related divided adjoint
559      snapshot file was missing some ad-variables,
560      but no warning issued by TAF
561    
562    checkpoint52a_pre
563    o some bug fixes for #undef REAL4_IS_SLOW
564    
565    checkpoint52 = ecco_c52_e35
566    o after testing adjoints of checkpoint51u_post
567    
568    checkpoint51u_post
569    o this is the post-merge tag of the ecco-branch
570      (needs another clean checkout and re-testing)
571    o various natl_box_adjoint configs and results
572      but no input fields
573    o obcs adjoint not yet merged!
574    o adding ECCO global 1x1 and 2x2 degree configs
575    o updated/extended some store directives for seaice
576    o pkg/ecco now containes ecco-specific part of cost function
577    o top level routines the_main_loop, forward_step
578      supersede those in model/src/
579      previous input data.cost now in data.ecco
580      (new namelist ecco_cost_nml)
581    o in ctrl/ cleaned some cross-dependencies and updated CPP options
582    
583    checkpoint51t_post
584    o this is the pre-merge tag of the ecco-branch
585    
586    checkpoint51s_post
587    o cleanup: removed various obsolete #define-s
588    o pkg/grdchk
589      - renamed 'ph-grd 3' to 'grad-res'
590      - merged from ecco-branch
591        (remaining bug fixes for obcs gradient checks)
592      - additional high-precision output for testreport
593        (grep for 'precision_grdchk_result')
594    
595    checkpoint51r_post
596    o cleaned up or removed CPP_OPTIONS.h files
597    o updated results for some of the tests to reflect the new
598      optfiles (-ieee: -O0 instead of -O3)
599    
600    checkpoint51q_post
601    o cd_code:
602      - moved cd_scheme.F -> cd_code_scheme.F
603      - separate read_checkpoint from cd_code_ini_vars.F
604      - separated cd_code part from write_checkpoint
605      - updated AD_SOURCE, generated .flow
606      - added CD_CODE_VARS.h to the_main_loop
607      - Moving cd_code specific store dir.s to pkg/cd_code
608    o ctrl package totally restructured
609      - pack/unpack now optional and decoupled from
610        xx_/adxx_ I/O
611      - ctrl_pack/unpack cleaned
612        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
613      - confined inclusion of AD_CONFIG.h to where necessary.
614    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
615    
616    checkpoint51p_post
617    o create initial cd_code package
618      - WARNING: the initialization of fields within packages
619        is broken because INI_FIELDS (where READ_CHECKPOINT is
620        called) is called *before* PACKAGES_INIT_VARIABLES.
621        This seems to be backwards since
622        1) its important to initially zero the entire field including
623           the "halo" region
624        2) zeroing needs to be done *before* reading pickup info
625           and the pickup call might or might not happen in any
626           particular run
627      - this needs an overhaul for R2
628    o cleanup verification/*/code/GMREDI_OPTIONS.h
629    o cleanup testreport
630    
631    checkpoint51o_post
632    o bringing AD-related verif's up to date with genmake2
633      - carbon/
634      - global_ocean.90x40x15/
635      - hs.94.1x64x5/
636      - (front_relax/ )
637    o (more) consistent directory structure for AD-related verif.'s
638    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
639    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
640    o bug fix in find_alpha.F for MDJWF:
641      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
642        change rho -> rho-rhoConst
643      - replace call find_rho to find_rhonum
644    o initialisation of rFlx extended to full array (required by TAF)
645      and shifted to thermodynamics
646    o removed PTRACERS.h in ptracers routine
647    o added surfacetendencyPtr to S/R parameter list pracers_forcing
648    o Correcting initialisations for fVerU, fVerV.
649    o helping TAF to recognize dependency on kUp for
650      fVerU, fVerV
651    o Replacing delZ by delR in pkg/ctrl/
652    checkpoint51o_pre
653    
654    o undid all of cp51 pending some cleanups and discussion
655    o added the [#include "AD_CONFIG.h"] statement to all files that need
656       it for adjoint/tl #defines
657     o re-worked the build logic in genmake2 to support AD_CONFIG.h
658     o removed tools/genmake since it no longer works
659    
660    checkpoint51n_post
661    o modifications to make FREEZE flux visible to pkg/kpp
662      - moved surfaceTendencyTice from pkg/seaice to main code
663      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
664      - subroutine FREEZE now limits only surface temperature
665        (this means new output.txt for global_ocean.90x40x15,
666         global_ocean.cs32x15, and global_with_exf)
667    o added surface flux output variables to TIMEAVE_STATVARS
668    
669    checkpoint51n_pre
670    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
671    o added [#include "AD_CONFIG.h"] to all files that use the following
672      defines:
673      - ALLOW_ADJOINT_RUN
674      - ALLOW_TANGENTLINEAR_RUN
675      - ALLOW_ECCO_OPTIMIZATION
676    
677    checkpoint51m_post
678    o incorporating changes to get TAMC/TAF working in genmake2
679      - added new TAMC/TAF targets to the Makefile
680      - various cleanups related to package handling
681      - these changes should have no impact on the forward model
682    
683    checkpoint51l_post
684    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
685     - faster algorithm for cal_addtime.F
686     - higher precision arithmetic, where needed
687     - pkg/exf *startdate variables changed from calendar date to
688       model integration time
689    
690    checkpoint51l_pre
691    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
692    o enable to apply restoring on S & T only in a latitude band.
693    o update output (external_forcing_surf modif. change truncation errors)
694       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
695    
696    checkpoint51k_post
697    o change default to: useNHMTerms=.FALSE.
698     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
699       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
700     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
701        exp1, ideal_2D_oce
702     - change data file of oceanic exp (leave the results unchanged for now)
703       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
704    o set gravitySign automatically according to the vertical coordinate used
705      (and change sign: back to "logical" value: +1 when R increases downward)
706    o added an include barrier to the default CPP_OPTIONS.h and
707      removed the #include "PACKAGES_CONFIG.h" from it
708    o fix a bug in mom_fluxform (from chk51j_post)
709    
710    checkpoint51j_post
711    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
712    o adjusted some flow directives (dynamics, thermodynamics)
713    o added cubed-sphere case to test cost function
714    o heckpoint_lev?_directives.h now include
715      pkg-specific directives, whenever those are enabled.
716    o Moving pkg-specific flow directives to corresponding pkg
717      Moving pkg-specific differentiation list to corresponding pkg
718      Moving pkg-specific checkpoint-lev storing to corresponding pkg
719      ---> conventions are
720           - pkg_ad.flow
721           - pkg_ad_diff.list
722           - pkg_ad_check_lev?_dir.h
723    
724    checkpoint51i_post
725    o merge of the branch-genmake2
726      - knowingly breaks the older genmake
727      - automatic generation of all ALLOW_${PKG_NAME} defines
728      - new testreport supersedes older testscript
729    o large number of package inclusion and header cleanups
730    checkpoint51i_pre
731    
732    o new output for adjoin of global ocean vector invariant
733    o fix for checkpoint of thermodynamic seaice and bulk_force
734    o Steph gchem various cleanups
735    
736    checkpoint 51h_pre
737    o fixed some single quotes
738    o modify gchem pkg to be more versatile
739    o modifications to clean up dic pkg
740    o add pkg/cfc
741    
742    checkpoint51g_post
743    o provide links for ARPACK and ADM*TLM
744    o start removing verification/vero/
745    o update AD-related stuff
746      (in particular some IF-statements in model/src/ routines)
747    o adding to verification/global_ocean.90x40x15/ adjoint of
748      vector invariant setup
749    
750    checkpoint51f_post
751    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
752    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
753      of tracer Green's fucntions for ocean inversion project.
754    
755    checkpoint51f_pre
756    o Added on-the-fly spatial interpolation capability
757        "USE_EXF_INTERPOLATION" to pkg/exf.
758      - This is a temporary Cartesian-grid hack until
759        the super-duper ESMF coupler becomes available.
760      - See verification/global_with_exf/README for usage example.
761      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
762        flags and modified pkg/seaice accordingly.
763    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
764        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
765        non-local transport term.
766    
767    checkpoint51e_post
768    o pkg/mom_vecinv:
769      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
770      - add time-ave diagnostic of vorticity advection.
771    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
772    o atmospheric geopotential: - include water vapor effect;
773                                - use p^kappa in p* scaling.
774    o land pkg: read initial state from files.
775    o AIM : add stratospheric drag in the upper level
776    
777    checkpoint51d_post
778    o change function ILNBLNK (=> last non-blank char.) to return zero
779      (instead of the string length) when the string. char is empty
780    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
781    o modif's to restore TAMC compatibility
782      - avoid "_d" constructs in PARAMETER declarations
783      - avoid interrupting lines by comment lines
784    o Use cluster local disks for purely local I/O
785      vs. globally visible disks needed for ctrl stuff
786      (merged from ecco-branch)
787      - new active_file_loc... and mdsio_..._loc routines
788      - affected packages: autodiff, ctrl, grdchk, mdsio
789    
790    checkpoint51c_post
791    o introducing integer flag debugLevel
792      - debLevZero: suppress all output
793      - debLevA: standard
794      - debLevB: equivalent to current debugMode=.TRUE.
795    o introducing pathname variable mdsioLocalDir for mdsio
796      that can be specified at runtime
797      (relevant for cluster I/O to local disk)
798    `
799    >>>checkpoint51b_post
800    adjoint of ptracers
801    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
802    o extended state in checkpoint_lev?, etc.
803    o alternative ctrl/cost with tr1 or ptracer
804    o new comlev1_bibj_ptracers
805    o new ptracers.flow
806    o made ptracers_forcing same as external_forcing_s
807    o added verification for adjoint with ptracers
808      - adm. grdchk fail so far
809      - tlm. grdchk OK
810      - checked tapelev/comlev recomputations: OK
811    <<<checkpoint51b_pre
812    
813    checkpoint51a_post
814    o added code for biogeochemistry package
815      - new pkgs: dic, gchem
816      - new subroutine in ptracers
817    o modify code for biogeo packages
818      - in model/src and pkg/ptracers
819    
820    checkpoint51
821    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
822      - autodiff, ctrl, exf, grdchk, seaice
823      kept separate packages
824      - cost, ecco, obcs
825    o updating verification/internal_wave, verification/lab_sea
826      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
827    
828    checkpoint50i_post
829    o Preparing next differentiable checkpoint and sync
830      of MAIN vs. ecco-branch
831      - 1st step: this one is differentiable
832      - 2nd step: next(! not this) checkpoint will have updated packages
833                  from ecco-branch)
834    
835    checkpoint50h_post
836    o new package "land": provide surface BC for AIM.
837    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
838    o AIM: use true log-P extrapolation for near surface temp (= as in
839        F.Molteni paper) ; update aim.5l_cs output.
840    o New variable in PARM03 for more flexible pickups
841    o somewhat cleaned package initialisation sequence for
842      ctrl/ cost/ ecco/ in packages_... routines
843    
844    checkpoint50g_post
845    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
846      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
847      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
848        made the default because of faster convergence than ADI
849    
850    checkpoint50f_post
851    o exf totally restructured
852      - replaced all exf_set_ routines by one generic exf_set_gen.F
853        and made sure it's still differentiable
854      - split exf_getffields.F into new exf_bulkformulae.F
855      - exf_inscal_/exf_outscal_ suffixes consistent with field names
856      - updated adjoint/makefile and relevant verif. accordingly
857    
858    checkpoint50f_pre
859     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
860          + change Evap over land. (update aim.5l_cs output)
861     o added missing .cvsignores and made uniform across expts
862     o changed configuration of tidal_basin_2d expt
863     o added pkg/debug functions for tracing code in fatal crashes
864     o tidied pkg/monitor to use MONITOR_OPTIONS.h
865     o new fn in pkg/monitor to stop model if solution grows too big
866     o removed lots of single quotes from comments
867    
868    checkpoint50e_post
869    o make KPP work with PTRACERS
870     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
871       nearly a copy of kpp_transport_s
872     - there is no analogue to SurfaceTendencyS, so I have to use
873       gPtr(of the surface layer) instead
874    o add a new platform SunFire+mpi (SunFire 15000) to genmake
875    checkpoint50e_pre
876    
877    checkpoint50d_post
878    o change kpp output from multiple-record state files to single-record state
879      files analogous to write_state.F
880    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
881      analogous to the cg2d-related output.
882    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
883      so that writing to internal file fn (with length 512) fails.
884    checkpoint50d_pre
885    
886    checkpoint50c_post
887    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
888    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
889    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
890    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
891    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
892    
893    checkpoint50c_pre
894    Merging from release1_p13:
895    o bug fix for pkg/seaice dynamic solver
896    o Added SEAICE_initialHEFF to pkg/seaice
897    
898    checkpoint50b_post
899    o store u*,v* in gU,V instead of in guNm1,gvNm1
900    o in order to put the momForcing out of the Adams-Bashforth:
901      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
902      to timestep.F
903    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
904    o re-generate output for highly sensitive test-exp:
905       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
906    
907    checkpoint50b_pre
908    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
909    o corrected CPP option mismatch in exf_Bulk... functions for case
910      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
911    
912    checkpoint50a_post
913    o Bug fix for merging between c50 and KPP.
914      ikey was passed from thermodynamics to kpp_calc via
915      common block rather than being recomputed in kpp_calc,
916      in contradiction with new key itdkey.
917      New key ikppkey created, and tamc.h headers updated.
918    
919    checkpoint50
920    - 2nd step of merge with ecco-branch:
921      merge changes in ecco-branch back into main trunk
922    - bug fix in find_alpha
923    - more storing in gmredi_calc_tensor.F, kpp_routines.F
924    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
925    - merged some sliced AD support routines
926    
927    checkpoint49
928    merged from ecco-branch:
929    o exf:
930      - Enable initialisation of forcing fields to constant
931        (runtime) values.
932      - in exf_getffields.F
933        Reduce i-/j-loop to interior domain, discarding overlaps.
934        That also fixes wrong TAF-key computations for key_1, key_2
935        with bulf formulae.
936      - exf_init.F modify #ifdef for exf_init_evap
937      - exf_getffieldrec.F, ctrl_getrec.F
938        The following INT-usages are not safe:
939          fldsecs  = int(fldsecs/fldperiod)*fldperiod
940          fldcount = int(fldsecs/fldperiod) + 1
941        and were modified.
942    o autodiff: checkpoint_lev...
943      - updated storing for bulk formulae (some arrays were missing)
944      - added state for seaice package
945      - synchronized with main branch
946    o DIVA:
947      Modif.s in
948      - the_main_loop.F
949      - the_model_main.F
950      and added cost_final_restore.F cost_final_store.F
951      o With these changes, it is possible to fully separate
952        the first forward run to compute the cost function (mdthe_main_loop)
953        and adjoint runs over individual DIVA intervals (adthe_main_loop)
954        into separate model executions.
955        This enables better tuning of DIVA to given queue sizes.
956      o Loss of cost function value in consecutive DIVA runs is
957        fixed by storing to 'costfinal' file.
958      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
959        beginning/end of adjoint integration is accounted for.
960      The current changes apply to TAF-1.4.26.
961      TAF has one remaining bug, requiring one manual change
962      (see MITgcm manual).
963    o cal: synchronized between MAIN and ecco-branch
964    
965    checkpoint48i_post
966    o Changes to restore differentiability of code w.r.t. previous tag
967      (mostly adding new routines to make list and replacing
968      pressure by totPhiHyd).
969    o Updated and merged grdchk package
970      - has both ADM and TLM checks
971      - works for single- and multi-proc.
972      - output cleaned
973      - worked successfully for parallel DIVA
974    o genmake:
975      - Adding -platform=SP4
976      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
977    o Modif. for DIVA:
978      ctrl_unpack should not be called in intermediate DIVA interval.
979      (similar thing would apply for active files such as
980      tbar, sbar, psbar, which should not be reinitialised;
981      only relevant for ecco-branch)
982    
983    checkpoint48h_post
984    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
985    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
986    o Added SEAICE_initialHEFF to pkg/seaice
987    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
988    
989    checkpoint48g_post
990    --- EOS:
991    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
992      store total Potential in totPhyHyd for diagnostics & EOS.
993    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
994    --- Pressure/geopotential gradient:
995    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
996    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
997      ( changes results of global_ocean_pressure )
998    o NLFS + z-coord.: add eta*Rho' contribution.
999    o accurate phiHyd when using interface-W at the middle between 2 centers
1000     ( changes results of ideal_2D_oce )
1001    o includes r* 2nd term in potential gradient.
1002    
1003    checkpoint48f_post
1004    Merging from release1_p12:
1005    o Modifications for using pkg/exf with pkg/seaice
1006      - improved description of the various forcing configurations
1007      - added basic radiation bulk formulae to pkg/exf
1008      - units/sign fix for evap computation in exf_getffields.F
1009      - updated verification/global_with_exf/results/output.txt
1010    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1011      (SBO) core products, including oceanic mass, center-of-mass,
1012      angular, and bottom pressure (see pkg/sbo/README.sbo).
1013    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1014      to avoid negative values in shallow regions.
1015      - updated verification/natl_box/results/output.txt
1016      - updated verification/lab_sea/results/output.txt
1017    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1018    o Added useSingleCpuIO option (see PARAMS.h).
1019    o Updated useSingleCpuIO option in mdsio_writefield.F to
1020      work with multi-field files, e.g., for single-file pickup.
1021    o pkg/seaice:
1022      - bug fix in growth.F: QNET for no shortwave case
1023      - added HeffFile for specifying initial sea-ice thickness
1024      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1025    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1026      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1027    o pkg/seaice:
1028      - adjoint-friendly modifications
1029      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1030    
1031    checkpoint48e_post
1032    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1033    o dynamics: change definition of computational domain & adapt mom_fluxform
1034      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1035    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1036        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1037        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1038        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1039        inverted_barometer solid-body.cs-32x32x1
1040      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1041    
1042    checkpoint48d_post
1043    o in preparation for r*:
1044     a) use pre-computed gradient of hydrostatic potential:
1045        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1046     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1047        => affects results of glob_oce_pressure (different truncation error)  
1048      update output.txt of ideal_2D_oce & global_ocean_pressure
1049    
1050    checkpoint48d_pre
1051    o in preparation for r*:
1052      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1053      pass the 2 comp. of the grad. as arguments to momentum S/R.
1054      but for the moment, only used if it does not change the results.
1055    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1056    
1057    checkpoint48c_post
1058    Modifications in treatment of initial flux forcing controls
1059    to avoid extra storing of flux fields.
1060    
1061    checkpoint48c_pre
1062    o Added tidal_basin_2d experiment (currently 1D!)
1063    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1064    
1065    checkpoint48b_post
1066    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1067     (modification to pressure gradient not yet implemented)
1068    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1069      (for U & V) that are used for vertical advection of momentum.
1070    
1071  checkpoint48a_post  checkpoint48a_post
1072  o In preparation for r*, use temp. array to compute vertical transport  o In preparation for r*, use temp. array to compute vertical transport
1073     in flux-form momentum pkg. => change results of few test-exp.     in flux-form momentum pkg. => change results of few test-exp.

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